Polymer Light-Emitting Electrochemical Cells: A New Direction for Electroluminescent Devices Fabricated with Conducting Polymers

在发光电化学电池中，通过在共轭聚合物薄膜的相对两侧同时掺杂p型和e型电化学，形成p-n结二极管，该聚合物薄膜中添加了电解质，为掺杂提供必要的反离子。利用所提出的电化学氧化还原机理，制备了基于共轭聚合物的发光器件。当导通电压接近发射材料的带隙时，可获得蓝色、绿色和橙色发射。本提案概述了聚合物发光电化学电池的化学、电化学、物理和器件物理的重点基础科学研究计划。提出的研究将探测原位创建的pn结，目的是确定结的宽度和轮廓作为施加电压的函数；拟议的研究将表征原位创建的pn结的电学特性（使用电流vs电压和电容vs电压测量）；最后，提出的研究将调查原位创建的pn结的稳定性。* * *

9528204 Heeger In light-emitting electrochemical cells, a p-n junction diode is created in-situ through simultaneous p-type and e-type electrochemical doping on opposite sides, respectively, of a thin film of conjugated polymer which contains added electrolyte to provide the necessary counterions for doping. Light-emitting devices based on conjugated polymers have been fabricated which operate by the proposed electrochemical oxidation reduction mechanism. Blue, green, and orange emission have been obtained with turn-on voltage close to the bandgap of the emissive material. This proposal outlines a focused program of basic scientific research on the chemistry, electrochemistry, physics and device physics of Polymer Light-Emitting Electrochemical Cells. The proposed research will probe the p-n junction created in-situ with the goal of determining the width and profile of the junction as a function of applied voltage; the proposed research will characterize the electrical properties of the p-n junction created in-situ (using current vs voltage and capacitance vs voltage measurements); and, finally, the proposed research will investigate the stability of the p-n junctions created in-situ. ***